This paper presents a comprehensive review of the current state of knowledge of second
harmonic generation (SHG) measurements, a subset of nonlinear ultrasonic nondestructive …

The time reverse modeling (TRM) is applied for signal-based acoustic emission (AE)
analysis of reinforced concrete (RC) specimens. TRM uses signals obtained from physical …

Before the 20th century there were few seismometers. So Earth's dynamic geophysical
processes were poorly understood. Today the potential for understanding those processes …

Time reversal (TR) signal processing is an effective tool to exploit a reverberant environment
for the intentional focusing of airborne, audible sound. A previous room acoustics TR study …

Non-linear elastic wave spectroscopy (NEWS) has been shown to exhibit a high degree of
sensitivity to both distributed and isolated non-linear scatterers in solids. In the case of an …

An ultrasonic therapeutic apparatus includes a handle, a horn or concentrator section
terminating in an operative tip, and a transducer assembly set disposed in the handle and …

The purpose of this research is to develop a visual demonstration of time reversal focusing
of vibrations in a thin plate. Various plate materials are tested to provide optimal conditions …

With the recent application of time reversed acoustics and nonlinear elasticity to imaging
mechanical damage, the development of time reversal based nondestructive evaluation …

Studying triggered Non Volcanic Tremor (NVT) is important because it may help to map the
depth of the locked zones of faults associated with high seismic risk. The success of this …

Conventional earthquake location methods depend critically on the correct identification of
seismic phases and their arrival times from seismograms. Accurate phase picking is …